Improvement in lock-nuts



didnt %tatz5 rniLiP DYEB., JR., ABRAM PARKER, Ann WiLLrAM B. WAY. lor PON- TIAO, MICHIGAN.

Letters Patent No. 108,987, dated November` 8, 1870.

iMPRovE-MENT IN LocK-Nu-rs.

The Schedule referred to inthese Letters Patent and making part of the name.

To whom (it may concern l Be it known that we, PHILIP DYER, J r., ABRAM PARKER, and WILLIAM B. WAY, of Pontiac, in the couutyof Oakland andState of Michigan, have invented a new and useful Improvement in Nut-Locks; and we do declare that the following is a true and aecurate description thereof', reference being had to the accompanying drawing and to the letters of reference marked thereon, and being a part of this specification, in which- Figurel shows a section of rail, {ish-plates, and bolts and nuts provided with our'locks.

Figures 2, 3, and 4 are sections.

Like letters indicate like parts in each figure.

lhe uaturcof this invention relates tothe construction oi a nut-lock, by means of which the nuts ernployed upon the bolts which secure the fish-plates of railway-joints in place.

It consistsI in four pieces of sheet or other metal, struck, cut, or cast into proper shape, which interlock with each other and with the nuts, in such a manner as to prevent the latter from turning or becoming acv cidentally loosened, thewhole being secured together by a key, as more fully4 hereinafter described.

In 'the accompanying drawing- A represents a flat and thin piece of metal, provided with a flange, a, to engage with the outer side of the nut b, and provided with a slot, c, which ter-'- The flange e is provided with shoulders t', by means of which the flange is prevented from its disengagement with the slot c;,it is also provided with projecting lugs g at the end of its prolongation, which is narrower than its body, for the purpose hereinafterexplained.

B is a similar piece to that last described, with a similar flange engaging through the slot c in the. plate C with the opposite side of the nut d, and provided with flanges h, through which are the slotsvk, to receive the key E.'

The plates A and C being placed so that their flanges engage with the outer sides oi' the nuts a d, whose sides are at right'angles with the face of the rail F, and with the ends of the bolts upon whichsaid nuts are placed projecting through the slots c,.the plate B is interlocked through the slotc in the plate `O in such a manuel' that its ange rests against the opposite side of the nut d, and the plate D is similarly interlocked with the slot in the plate A, so as to rest against the inner side' of thelnnt b, and its narrow prolongation is pressed down between the flanges h of the plate B, when the whole is rigidly secured together by the insertion of the key E through the slots k.

What we claim as our invention, and desire to secure by Letters Patent, is

A nut-lock, wherein the plates A B C D are conlstructed and operate substantially as described, and

secured by the key E, as herein set forth.

' PHILIP DYER, JR.

ABRAM PARKER. WILLIAM B. WAY.

Witnesses:

A. W. BURTT, ,10. S. STEWART 

